AD 76-16-02

76-16-02 AIRBORNE MANUFACTURING COMPANY: Amendment 39-2685. Applies to Models 113A, 200CC, 200CW, 220CC, 220CW, 221CC, 222CW engine driven pumps.

Compliance is required within the next 25 hours time in service, or by next annual inspection, whichever occurs first, after the effective date of this AD, unless already accomplished.

To prevent loss of vacuum pressure with the accompanying loss of directional or attitude gyro function accomplish the following:

Remove from service and replace with another serviceable approved vacuum pump all Airborne engine driven vacuum pumps manufactured prior to 1966 for which the model and serial numbers are listed below:

Model Year Serial Numbers 113A 1960 1D1 thru 12D1199 inclusive

1961 1E1 thru 12E2288 inclusive

1962 1F1 thru 12F3411 inclusive

1963 1G1 thru 12G4230 inclusive

1964 1H1 thru 12H1688 inclusive

1965 1J1 thru 12J210 inclusive 200CC, 200CW 1963 5G43 thru 12G903 inclusive

1964 1H1 thru 12H5623 inclusive

1965 1J1 thru 12J9397 inclusive 220CC, 220CW 1964 2H1 thru 12H680 inclusive

1965 1J1 thru 4J393 inclusive 221CC, 222CW 1965 3J1 thru 12J371 inclusive

Airborne Manufacturing Company Service Letter No. 16, dated January 29, 1976, also pertains to this subject.

This amendment becomes effective August 11, 1976.